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1.
A type of sneeze, usually only applied to those with the name "Matt", or "Matthew" (etc.). Derrived from "Achoo".
Matt: M..ma...MA-TCHOO!
John: That's a bad sneeze you've got there
Matt: Yeah, I've got raibes. Doctors say I've only got 3 weeks to live.
John: Oh. Blame Matchu.
by G August 07, 2004
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